Baseline colonoscopy finding | Recommended interval for surveillance colonoscopy | Strength of recommendation | Quality of evidence |
Normal | 10 years¶ | Strong | High |
1 to 2 tubular adenomas <10 mm | 7 to 10 yearsΔ | Strong | Moderate |
3 to 4 tubular adenomas <10 mm | 3 to 5 years | Weak | Very low |
5 to 10 tubular adenomas <10 mm | 3 years | Strong | Moderate |
Adenoma ≥10 mm | 3 years | Strong | High |
Adenoma with tubulovillous or villous histology | 3 years◊ | Strong | Moderate |
Adenoma with high-grade dysplasia | 3 years◊ | Strong | Moderate |
>10 adenomas on single examination§ | 1 year | Weak | Very low |
Piecemeal resection of adenoma ≥20 mm | 6 months | Strong | Moderate¥ |
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